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Wed, 26 Feb 2025 11:06:34 GMT Received: from yuanfang4-gv.ap.qualcomm.com (10.80.80.8) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Wed, 26 Feb 2025 03:06:27 -0800 From: Yuanfang Zhang Date: Wed, 26 Feb 2025 19:05:53 +0800 Subject: [PATCH v2 4/5] coresight-tnoc: add node to configure flag type MIME-Version: 1.0 Message-ID: <20250226-trace-noc-driver-v2-4-8afc6584afc5@quicinc.com> References: <20250226-trace-noc-driver-v2-0-8afc6584afc5@quicinc.com> In-Reply-To: <20250226-trace-noc-driver-v2-0-8afc6584afc5@quicinc.com> To: Suzuki K Poulose , Mike Leach , James Clark , "Alexander Shishkin" , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: , , , , , , , Yuanfang Zhang X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1740567972; l=2045; i=quic_yuanfang@quicinc.com; s=20241209; h=from:subject:message-id; bh=woWx7BCA3qM8Qe0dZBdeROv3XUQ44gsKewoaDs/FE28=; b=iZgVmN3emcQ/GX8GWBc33AHMUQd5SGlKVQPfOR8UCKD0sNhLToiufV1VH7vsL5F/HCnQ8XndP 0NCxfQQcFDmBwK8Ti0y0UYQoKr8eS4CI+gTBRLNQiu+orvCO+jCLBs9 X-Developer-Key: i=quic_yuanfang@quicinc.com; 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1: 'FLAG_TS' packets. Signed-off-by: Yuanfang Zhang --- drivers/hwtracing/coresight/coresight-tnoc.c | 42 +++++++++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-tnoc.c b/drivers/hwtracing/coresight/coresight-tnoc.c index 20231f28ddcb6a60d9b3c1ca3e0ca4d731dac39c..ad973749250644760adc4dfd855240026d0a744c 100644 --- a/drivers/hwtracing/coresight/coresight-tnoc.c +++ b/drivers/hwtracing/coresight/coresight-tnoc.c @@ -26,7 +26,7 @@ static ssize_t flush_req_store(struct device *dev, unsigned long val; u32 reg; - if (kstrtoul(buf, 10, &val)) + if (kstrtoul(buf, 0, &val)) return -EINVAL; if (val != 1) @@ -73,9 +73,49 @@ static ssize_t flush_status_show(struct device *dev, } static DEVICE_ATTR_RO(flush_status); +/* + * Sets the type of issued ATB FLAG packets: + * 0: 'FLAG' packets; + * 1: 'FLAG_TS' packets. + */ +static ssize_t flag_type_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t size) +{ + struct trace_noc_drvdata *drvdata = dev_get_drvdata(dev->parent); + unsigned long val; + + if (kstrtoul(buf, 10, &val)) + return -EINVAL; + + if (val != 1 && val != 0) + return -EINVAL; + + spin_lock(&drvdata->spinlock); + if (val) + drvdata->flag_type = FLAG_TS; + else + drvdata->flag_type = FLAG; + spin_unlock(&drvdata->spinlock); + + return size; +} + +static ssize_t flag_type_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct trace_noc_drvdata *drvdata = dev_get_drvdata(dev->parent); + + return sysfs_emit(buf, "%u\n", drvdata->flag_type); +} +static DEVICE_ATTR_RW(flag_type); + static struct attribute *trace_noc_attrs[] = { &dev_attr_flush_req.attr, &dev_attr_flush_status.attr, + &dev_attr_flag_type.attr, NULL, };